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ST3241E

鹵15kV ESD Protected 3 to 5.5V, 400kbps,

RS-232 transceiver with auto-powerdown

General features

s

ESD Protection for RS-232 I/O pins:

鹵8KV IEC 1000-4-2 Contact discharge

鹵15KV Human body model

1碌A(chǔ) Supply current achieved when in auto-

powerdown

250Kbps Minimum guaranteed data rate

Guaranteed 6V/ms slew rate range

Guaranteed mouse driveability

0.1碌F External capacitors

Meet EIA/TIA-232 specifications down to 3V

Available in SO-28, SSOP-28 and TSSOP28

packages

SSOP

TSSOP

SOP

s

s

s

s

s

s

s

Description

The ST3241E device consists of 3 drivers, 5

receivers and a dual charge-pump circuit. The

device meets the requirements of EIA/TIA and

V.28/V.24 communication standards providing

high data rate capability and enhanced

electrostatic discharge (ESD) protection. All

transmitter outputs and receiver input are

protected to 鹵8KV USING IEC 1000-4-2 contact

discharge and 鹵15KV using the Human Body

Model. The receiver R2 is always active to

implement a wake-up feature for serial port.

The ST3241E has a proprietary low-dropout

transmitter output stage enabling true RS-232

performance from a 3.0V to 5.5V supply with a

dual charge pump. The device is guaranteed to

run at data rates of 250kbps while maintaining

RS-232 output levels.

It is a complete serial port (3 drivers, 5 receivers)

intended for notebook or subnotebook computers.

Receivers R1 and R2 have extra outputs in

addition to their standard outputs. These extra

output are always active.

Typical application are in notebook, subnotebook,

palmtop computers, battery-powered equipment,

hand-held equipment, peripherals and printers..

Order code

Part number

ST3241ECDR

ST3241EBDR

ST3241ECPR

ST3241EBPR

ST3241ECTR

ST3241EBTR

Temperature range

0 to 70擄C

-40 to 85擄C

0 to 70擄C

-40 to 85擄C

0 to 70擄C

-40 to 85擄C

Package

SO-28 (Tape & Reel)

SO-28 (Tape & Reel)

SSOP-28 (Tape & Reel)

SSOP-28 (Tape & Reel)

TSSOP28 (Tape & Reel)

TSSOP28 (Tape & Reel)

Comments

1000 parts per reel

1000 parts per reel

1350 parts per reel

1350 parts per reel

2500 parts per reel

2500 parts per reel

April 2006

Rev 3

1/17

www.st.com

17

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